Shock-absorber.



O. R. SCHWANTES.

SHOCK ABSORBER.

APPLICATION FILED ocn, 191s.

lateutvd July 25%, 12H8.

(nu van tofz Rican cyl() OTTO R. SCHWANTS, 0F CLINTONVILLE, WISCGNSIN'.

sHocmeBSoRBEn.

Specification of Letters Patent.

Patented July 23, 1918.

Application led October 5, 191B. Serial No. 123,908.

To allfzctomy t may concern.'

Be it known that I, O't'ro R. Scnwax'rns, a citizen ot the United States, residing at (llintonville. in the county ot Waupaca aml State ot Wisconsin, have invented certain new and useful lmprovetmnts in Shock- Absorbers, of which the following is a specitication.

` This invention has relation to @hoek absorbers t'or motor velticle.-i, brithe like. and the` nature and objects thereof will be readily apparent to thoael skilled ih the art to which it apertains in the light ot the t'ollowing explanation ofthe accompanying,r drawings illustrating what l now believe to be the preferred embt'aliment. or mechanical expression, of my invention from among;l other 'forms and arrangements within the Spirit thereof or the `ecope ot' tl'tcappended c ann.

,llowevetg an object of the invention is to provide a Shock absorber t'or motor vehicles. with a view to permitting umnterruptcd downward movement ot the velncle body relative to the trame7 when the car is joltcd over an obstruction in the road hed. or entering;r a depression therein, but to retard the resultingr upward movement ot' thc car body. under the influence otl its supporting springs, thereby obviating theehock imparted upon said upward movement and reducing the vibration ofthe ear body.

In addition to the foregoing', my invention comprehends improvemente` in the de-I tails: of construction and arrang'tmtent. ot parts tofbe hereinafter more t'ully described and particularly set t'orth in the appended claim.

ln the accompanyinrf drawings in which similar and correspon( ing parte are deeig- `nated by the same characters ot reference throughout the several views `in which they appear:

Figure l, is eyiew in end elevation ot` the rear end of a motor vehicle, illustrating the application thereto ot' my invention.

Fig. 2, iS a View in one. position illus tratinga vertical section taken through thel cylinder ot my improved absorber.

Fig. 3, is a similar view illustrating the parte in a different position.

Fig. 4 is a .transverse section on the line 4-4 of Fig. 2.

Fig. 5. is a View in elevation ot a modified manner ot' snl'iporting the cylituler ot' the shock absorber relative to.the car body.

With reference to the drawings 1 indicatea the rear axle of a conventional motor vehicle and 2 the car body. A shock abaorbingr element is preferably located .on the axle housing at cach eide ot` the ditt'erential, and in the present etnbodiment each element. comprises a cylinder 5 having formed intcgrally therewith at oneclosed end an ear I3 tornnng means whereby theelement may bc pivoted to the axle housing. thev opposite.

end 'of the cylinder being externally threaded to receive a corrcspom'hngrly threaded cap (i provided with a central packinggland T.

A piston 8 is provided interiorly of each cylinder for vertical reeiprocation therein, a piston rod 9 having,r a lower threaded ex tension 10 which enters a central opening in said piston. 'lhe piston rod t) paeses through the packing;V gland 7 and is pivotally connected at its upper-end to one end ot` an oscillatable lever l2, pivoted at its other end to the axle housing;r and extended normally in an upward and outward direction. The intermediate portion ot' the oscillating lever ,l2 is connected by means ot' a vertically and inwardly extcndinfr link 15 to a bracket 1,6,

Secured to the undir side ot thc car body. 'l`he lever 1:2 is provided with a series otl openings 12 whereby the piston rod and link 15 may be adjnstably connected thereto.

The piston 8 comprieee` oppositely directed stop members 17 lthe central connected pori tion 18 of which is formed with a threaded opening in which to receive the end of the rod 9. The portion 18 of the piston is further formed with a downwardly directed lug 19, transversely apertnred to receive a pint le 20`which projects at each end beyond the lug to hingedly support semicireular lleaves 21 which are formed upon their diametrical edges with apertnred enlar ements to teceivc the ends of the pintle. hen the leaves are in extended position as shown in Fi". E2, they ,ontorm to the sides` of the cyl l valve leaves 21, thereby a downward movement of the vehicle body `the piston endl consequentlyV the. vehicle body will descend freely. Upon the return of the vehicle body toits former position under the; in uence of its supporting' springs, the piston is moved in e downward direction.

The passage of the duid through the conduits of the piston in -a reverse direction causes the movement lof the valve leaves away from each other, and retarding the downward movement of the' piston. lThe up ward movement of the car body is thereby .retarded suliciently toabsorb the shock and to permit the return of the car body to its former position in a gradual manner. The

valve leaves 21 are provided with' constricted apertures 241, for permitting the retarded passage of liuid through the piston conduits by the provision of the links 12 and 15, and the series of openings in 12, dilerent degrees of movement of the piston for the same movement of the vehicle body may be permitted.

ift will be obvious that the arrangement of ythe levers 12 and 15 .also acts to resist side sway of they car body and to prevent sudden reboundA of the body when subjected to a downwerd movement at one side.

ln Fig. 5 S1 have illustrated a' modified forni of my invention 'wherein thel cylinder otally connectin Levee?? .is mounted a reversed position, so .as to dispose its plston downward. The plston in. this form of lnventlon 1s provided with 45 a head 25 having a spring disposed between said head andlthe axle 26 of the vehicle, In a similar manner a spring 27 is disposed between the upper portion of the cylinder and the vehicle body 28.- InV this form oi' 50 the invention 'owing 'to the reversed position,

of the cylinder the downward movement of' the vehicle body will be retarded, by means of internal mechanism, of the cylinder, while the upward movement of the body will be resisted to some extent Iby the resistance of the piston, and assisted by means of the springs vdisposed above and below the cylinders.

Having thus described-my invention what I claim as new and desire to secure by Letters Patent is A shock'absorber including a cylinder, an apertured lug thereon whereby the cylinder may be pivotally connected to the axle of a motor vehicle, a piston movable in said cylinder, a rod connected to the piston, a

lever having one end apertured for connection to the axle housing, said lever having a plurality of longitudinally spaced open- *lo ings, a bolt connecting the outer end of said rod with one -of sa1d\ openings, a llnk, a

bolt inserted in one end of said link and in one of the perforatidns of the lever for pivmeans for ivota ly connecting the opposite end of Vthe ink ,to the vehicle body.

In testimony whereof I a-lix my signature i n presence of, two witnesses.v

o'rfro n. soHwAN'rEs.

Witnesses: I

C. E. GIBSON, NORMAN HANSEN; y

the parts together, and 

